US8410238B2 - Bishydroxyarylsiloxane compound and method of preparing the same - Google Patents
Bishydroxyarylsiloxane compound and method of preparing the same Download PDFInfo
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- US8410238B2 US8410238B2 US12/980,422 US98042210A US8410238B2 US 8410238 B2 US8410238 B2 US 8410238B2 US 98042210 A US98042210 A US 98042210A US 8410238 B2 US8410238 B2 US 8410238B2
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- bishydroxyarylsiloxane
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- alkyl
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
- C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
Definitions
- the present invention relates to a bishydroxyarylsiloxane compound and a method for preparing the same.
- U.S. Pat. No. 3,189,662 issued to Vaughn et al. discloses a method for preparing a copolymer of polycarbonate and a siloxane monomer in which bisphenol moieties are bound to both ends of polydimethylsiloxane.
- hydrolysis of the siloxane monomer is likely to occur after polymerization due to the unstable silicon-oxygen bonds connecting the siloxane and reactive moieties, leading to poor weather resistance and mechanical properties of the copolymer.
- the present invention relates to a bishydroxyarylsiloxane compound having a novel structure in which a particular moiety is introduced between siloxane blocks, which can provide flexibility in selecting physical properties of a copolymer including the same.
- the bishydroxyarylsiloxane compound is represented by Formula 1:
- R 1 and R 2 are each independently C 1 -C 10 alkyl or C 6 -C 18 aryl, optionally substituted with halogen or C 1 -C 6 alkoxy,
- each A is independently C 1 -C 10 alkylene or C 6 -C 18 arylene optionally including —O— or —S—,
- Z is C 1 -C 18 alkylene, C 6 -C 18 cycloalkylene or C 6 -C 18 arylene, optionally substituted with C 1 -C 6 alkyl, C 6 -C 18 aryl or halogen,
- each Y is independently hydrogen, halogen, C 1 -C 18 alkoxy, C 1 -C 10 alkyl or C 6 -C 18 aryl, and
- each n is independently an integer from 4 to 100.
- the present invention also provides a method for preparing the bishydroxyarylsiloxane compound of Formula 1.
- the method of the invention includes reacting a hydride terminated siloxane represented by Formula 2:
- R 1 and R 2 are each independently C 1 -C 10 alkyl or C 6 -C 18 aryl, optionally substituted with halogen or C 1 -C 6 alkoxy, and
- n is an integer from 4 to 100
- B is C 1 -C 10 alkylene or C 6 -C 18 arylene having a terminal double bond optionally including —O— or —S—, and
- Y is hydrogen, halogen, C 1 -C 18 alkoxy, C 1 -C 10 alkyl or C 6 -C 18 aryl, to synthesize a monohydroxyarylsiloxane compound represented by Formula 4:
- R 1 , R 2 and n are as defined in Formula 2,
- A is C 1 -C 10 alkylene or C 6 -C 18 arylene optionally including —O— or —S—, and
- Y is as defined in Formula 3;
- FIGS. 1 and 2 are NMR and IR spectra, respectively, of bishydroxyoligodimethylsiloxane A prepared in Example 1;
- FIGS. 3 and 4 are NMR and IR spectra, respectively, of bishydroxyoligodimethylsiloxane B prepared in Example 2;
- FIGS. 5 and 6 are NMR and IR spectra, respectively, of bishydroxyoligodimethylsiloxane C prepared in Example 3;
- FIG. 7 is a 1 H NMR spectrum of bishydroxyoligodimethylsiloxane D prepared in Example 4.
- FIG. 8 is a 1 H NMR spectrum of bishydroxyoligodimethylsiloxane E prepared in Example 5.
- the present invention provides a bishydroxyarylsiloxane compound represented by Formula 1:
- R 1 and R 2 are each independently C 1 -C 10 alkyl or C 6 -C 18 aryl, optionally substituted with halogen or C 1 -C 6 alkoxy,
- each A is independently C 1 -C 10 alkylene or C 6 -C 18 arylene, optionally including —O— or —S—,
- Z is substituted or unsubstituted C 1 -C 18 alkylene, C 6 -C 18 cycloalkylene or C 6 -C 18 arylene,
- each Y is independently hydrogen, halogen, C 1 -C 18 alkoxy, C 1 -C 10 alkyl or C 6 -C 18 aryl, and
- each n is independently an integer from 4 to 100.
- alkyl as used herein is intended to include both linear alkyl and branched alkyl groups.
- R 1 and R 2 in Formula 1 are each independently C 1 -C 6 alkyl, for example, C 1 -C 3 alkyl, and as another example, each of R 1 and R 2 can be methyl.
- each A in Formula 1 is C 1 -C 6 alkylene, for example, C 1 -C 3 alkylene, and as another example each A can be methylene.
- Z in Formula 1 can be substituted or unsubstituted C 1 -C 10 alkylene, C 6 -C 10 cycloalkylene or C 6 -C 10 arylene.
- Exemplary substituents for Z may include C 1 -C 6 alkyl, C 6 -C 18 aryl and halogen.
- Z can be substituted with C 1 -C 6 alkyl, for example C 1 -C 3 alkyl.
- Each of the Si atoms of the Si—Z—Si linkage in Formula 1 may be directly bonded to Z or may be bonded to the substituent of Z.
- each Y in Formula can independently be hydrogen or C 1 -C 3 alkoxy, for example, hydrogen or methoxy.
- the number of Y on each of the benzene moiety may be from 1 to 4, for example 1 or 2.
- Each Y may be bonded to the 2-, 3-, 5- or 6-position of the benzene ring, for example, each Y can be bonded to the 3-position of the benzene ring.
- Each n in Formula 1 can independently bean integer from 20 to 50, for example, an integer from 20 to 40.
- bishydroxyarylsiloxane compounds include, but are not limited to, the following compounds:
- These compounds have a structure in which a moiety, such as alkyl, aryl or cycloalkyl, is introduced between the siloxane blocks. This introduction enables the advent of new siloxane monomers, which have not previously been published.
- the compound of Formula 1 has terminal hydroxyl groups, which are polymerizable with a polymer, such as polycarbonate, polyester or polyphosphate. Due to the presence of the terminal hydroxyl groups, the compound of Formula 1 can be used as a siloxane monomer, which can be copolymerized with the polymer to prepare a copolymer.
- the moiety, such as alkyl, aryl or cycloalkyl, introduced between the siloxane blocks can function to tune the physical properties of the siloxane-polymer copolymer or to impart new physical properties to the siloxane-polymer copolymer. That is, the siloxane monomer of Formula 1 can contribute to the preparation of siloxane-polymer copolymers with improved physical properties or siloxane-polymer copolymers imparted with new physical properties.
- Such physical properties include, but are not limited to, heat resistance, hydrolysis resistance, chemical resistance, impact resistance and flame retardancy.
- the bishydroxyarylsiloxane compound of Formula 1 can be used to improve the chemical resistance or impact resistance of polycarbonate resins and can be added to polyphosphate resins to yield novel flame retardants benefiting from the physical properties of silicon.
- the present invention further provides a method for preparing the compound of Formula 1.
- the method includes reacting a hydride terminated siloxane represented by Formula 2:
- R 1 and R 2 are each independently C 1 -C 10 alkyl or C 6 -C 18 aryl, optionally substituted with halogen or C 1 -C 6 alkoxy, and n is an integer from 4 to 100, with a phenol derivative represented by Formula 3:
- B is C 1 -C 10 alkylene or C 6 -C 18 arylene having a terminal double bond, optionally including —O— or —S—
- Y is hydrogen, halogen, C 1 -C 18 alkoxy, C 1 -C 10 alkyl or C 6 -C 18 aryl, to synthesize a monohydroxyarylsiloxane compound represented by Formula 4:
- R 1 , R 2 and n are as defined in Formula 2
- A is C 1 -C 10 alkylene or C 6 -C 18 arylene, optionally including —O— or —S—
- Y is as defined in Formula 3 (‘first step’); and reacting the monohydroxyarylsiloxane compound with a diene (‘second step’).
- the hydride terminated siloxane of Formula 2 is reacted with the phenol derivative of Formula 3 in the presence of a catalyst to synthesize the monohydroxyarylsiloxane compound of Formula 4.
- the catalyst may be a platinum-based catalyst.
- the catalyst may be platinum or a platinum-containing compound.
- exemplary catalysts include without limitation H 2 PtCl 6 , Pt 2 ⁇ [(CH 2 ⁇ CH)Me 2 Si] 2 O ⁇ 3 , Rh[(cod) 2 ]BF 4 , Rh(PPh 3 ) 4 Cl, Pt/C and the like, and mixtures thereof.
- the catalyst is Pt/C, for example, 10% Pt/C.
- the catalyst may be used in an amount of 10 to 500 ppm, for example 50 to 150 ppm based on the amount of the hydride terminated siloxane of Formula 2.
- the reaction may be conducted in an organic solvent.
- the organic solvent may be 1,2-dichloroethane, toluene, xylene, dichlorobenzene or a mixture thereof.
- the solvent includes toluene.
- the reaction temperature and time may be determined depending on the reactivity between the compounds of Formulae 2 and 3.
- the reaction temperature may be from 60 to 140° C., for example from 110 to 120° C.
- the reaction time may be from 2 to 12 hr, for example from 3 to 5 hr.
- the compound of Formula 4 may be purified for the next step or may be used in situ without further purification.
- the monohydroxyarylsiloxane compound of Formula 4 is reacted with a diene to prepare the bishydroxyarylsiloxane compound of Formula 1.
- the diene may be a substituted or unsubstituted C 1 -C 18 alkene or alkadiene, a substituted or unsubstituted C 6 -C 18 cycloalkane, cycloalkene or cycloalkadiene, or a diene containing a substituted or unsubstituted C 6 -C 18 aryl group.
- the diene is a substituted or unsubstituted C 1 -C 10 alkene or alkadiene, a substituted or unsubstituted C 6 -C 10 cycloalkane or cycloalkene or cycloalkadiene or substituted or unsubstituted C 6 -C 10 aryl group.
- the substituent may be C 1 -C 6 alkyl or C 6 -C 18 aryl optionally including a double bond or a halogen atom.
- the substituent is a C 1 -C 6 alkyl group optionally containing a double bond, for example a C 1 -C 3 alkyl group optionally containing a double bond.
- the compound of Formula 4 which may be used without further purification after completion of the first step, can be reacted with the diene in situ to prepare the bishydroxyarylsiloxane compound.
- the temperature and time for the reaction between the monohydroxyarylsiloxane compound and the diene may be appropriately determined without limitation.
- the reaction temperature and time employed in the second step may be the same as those employed in the first step.
- the bishydroxyarylsiloxane compound can be purified by any suitable method known in the art.
- the catalyst can be removed from the reaction mixture by filtration. Concentration of the filtrate removes the solvent and low molecular weight by-products, yielding the bishydroxyarylsiloxane compound of Formula 1.
- the bishydroxyarylsiloxane compound may be further purified.
- R 1 , R 2 , A, B, Z, Y and n are as defined above.
- the phenol derivative is reacted with the hydride terminated siloxane in the presence of Pt/C as a catalyst to prepare the monohydroxyarylsiloxane compound, which is then reacted with the diene in the presence of the same catalyst to prepare the bishydroxyarylsiloxane compound.
- the present invention further provides a copolymer including the bishydroxyarylsiloxane compound as a monomer.
- the copolymer may include at least one polymer such as but not limited to polycarbonate, polyphosphate, polyester, and the like, and combinations thereof.
- the copolymer may include about 0.1 to about 50% by weight of the bishydroxyarylsiloxane compound and about 50 to 99.9% by weight of the polymer.
- the copolymer can be prepared by any suitable method known in the art.
- Octamethylcyclotetrasilane (344.5 g, 1.16 mol), tetramethyldisilane (52.0 g, 0.387 mol) and 500.0 ml of trifluoromethanesulfonic acid are stirred in a reactor at 25° C. for 24 hr, and then 14 g of MgO is added thereto. After stirring for 1 hr, the reaction mixture is filtered and concentrated under vacuum at high temperature to remove unreacted materials, yielding 300 g of an oligodimethylsiloxane compound. 0.5 g of Pt/C is added to 300 g of the oligodimethylsiloxane compound in 270 ml of toluene. After heating to 110° C.
- Bishydroxyoligodimethylsiloxane B is prepared in the same manner as in Example 1 except that 344.5 g (1.16 mol) of octamethylcyclotetrasilane and 26.0 g (0.193 mol) of tetramethyldisilane are used. NMR and IR data for the product are shown in FIGS. 3 and 4 .
- Bishydroxyoligodimethylsiloxane C is prepared in the same manner as in Example 1 except that 344.5 g (1.16 mol) of octamethylcyclotetrasilane and 18.0 g (0.134 mol) of tetramethyldisilane are used. NMR and IR data for the product are shown in FIGS. 5 and 6 .
- Bishydroxyoligodimethylsiloxane D is prepared in the same manner as in Example 1 except that 9 g (0.11 mol) of 2,3-dimethylbutadiene is used instead of 1,5-hexadiene. NMR data for the product are shown in FIG. 7 .
- Bishydroxyoligodimethylsiloxane E is prepared in the same manner as in Example 1 except that 14.9 g (0.11 mol) of limonene is used instead of 1,5-hexadiene. NMR data for the product are shown in FIG. 8 .
- results of the DOSY analysis show that bishydroxyoligodimethylsiloxane A is bound to the backbone of the polycarbonate.
- GPC analysis shows that the polymer has a weight average molecular weight (M w ) of 21,248 g/mol.
- the reaction mixture is stirred at 0° C. for 2 hr.
- the reaction mixture is diluted with 1 L of methylene chloride and washed sequentially with 1 L of a 1 N aqueous solution of hydrochloric acid ( ⁇ 2) and 1 L of distilled water ( ⁇ 2).
- the methylene chloride layer is separated and concentrated under reduced pressure.
- the addition of hexane to the concentrate afforded a bishydroxyoligodimethylsiloxane A-polyphosphate copolymer as a white solid precipitate in a yield of 92%.
- GPC analysis shows that the copolymer has a weight average molecular weight (M w ) of 6,100 g/mol.
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US20130289193A1 (en) * | 2010-12-30 | 2013-10-31 | Cheil Industries Inc. | Polycarbonate Resin Composition Having Excellent Chemical Resistance |
US8907013B2 (en) | 2010-05-17 | 2014-12-09 | Cheil Industries Inc. | Polycarbonate resin composition and molded product using the same |
US20150056545A1 (en) * | 2013-08-26 | 2015-02-26 | Shin-Etsu Chemical Co., Ltd. | Polymer compound, chemically amplified negative resist composition, photo-curable dry film and production method thereof, layered product, patterning process, and substrate |
US9150725B2 (en) | 2010-07-30 | 2015-10-06 | Cheil Industries Inc. | Flame retardant polycarbonate resin composition and molded product made using the same |
US9334372B1 (en) | 2015-02-25 | 2016-05-10 | Momentive Performance Materials Inc. | Reactive polysiloxanes and copolymers made therefrom |
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